Ok, have a 09 with spartan and 5inch down pipe back and im running on the 125 because i plow anways, about a month ago I was driving and all of a sudden on my dashdaq my boost went to -7 I gave it a little more gas and the truck had no power just seemed like driving with no turbos. I pulled over shut the truck off everything back to normal. Now this morning the same thing happened to me twice while driving from job to job, it would occur for about 30 seconds to a miniute then stop. No check engine light was on but it was throwing a manifold pressure code and a turbo/supercharger code. Kept driving the codes went off.. Also It was -2 today so I let my truck warm up for about 10-15 mins and started driving, I noticed that it was pouring white smoke figured it just wasnt warmed up all the way so i let it go.. but 4 hours of non stop plowing it was still pouring white smoke, ik its cold but wth is going on?